Why being an introvert is a good thing - and how to make it great for you: Depending on who you listen to, introverts make up 25-50% of the U.S. population, or between 80 and 160 million people. That's a lot of self aware folks with strong powers of observation, concentration and focus. But many of us don't feel strong or energetic, and even wonder if there's something wrong with us. Some of us don't even realize we're introverts. The latest research shows that introverts are hardwired differently, with specific energy and lifestyle needs that sometimes conflict with those of extroverts. It's...